Mathematics Paper 1D

The production of milk, in litres, of 14 cows on a certain day was recorded as follows: 22, 26, 15, 19, 20,16, 27,15, 19, 22, 21, 20, 22 and 28. Determine the median.

• 21

• 20

• 20.5

• 21.5

• 0.0074

• 0.2341

• 0.7406

• 0.3799

A wholesaler sold a radio to a retailer making a profit of 20%. The retailer later sold the radio for Ksh 1560 making a profit of 30%. Calculate the amount of money the wholesaler had paid for the radio.

• Ksh 1200

• Ksh 1000

• Ksh 1100

• Ksh 1050

Chelimo’s clock loses 15 seconds every hour. She sets the correct time on the clock at 0700h on a Monday. Determine the time shown on the clock when the correct time was 1900h on Wednesday the same week.

• 1845 h

• 1915 h

• 1805 h

• 1935 h

Given that sin (x + 20)° = - 0.7660, find x, to the nearest degree, for 0°< x <360°.

• x = 210⁰

  or

  x = 270⁰

• x = 30⁰

  or

  x = 150⁰

• x = 210⁰

  or

  x = 290⁰

• x = 150⁰

  or

  x = 210⁰

A number m is formed by writing all the prime numbers between 0 and 10 in an ascending order. Another number n is formed by writing all the square numbers between 0 and 10 in a descending order. Find m — n

• 1146

• 1416

• 1541

• 1461

The interior angles of an octagon are 2x, 1/2x, (x + 40)°, 110°, 135°, 160°, (2x + 10)° and 185°. Find the value of x.

• 70⁰

• 120⁰

• 110⁰

• 80⁰

A straight line passes through points (-2, 1) and (6, 3). Find the equation of the line in the form y = mx + c;

A triangle ABC is such that AB = 5 cm, BC = 6cm and AC = 7cm. Calculate the size of angle ACB, correct to 2 decimal places.

• 84.72⁰

• 44.42⁰

• 4.92⁰

• 24.42⁰